'09 version of luxury automaker's S-Class will get about 30 mpg
                                
                                
                                    (Newser) -
                                    Mercedes is adding a hybrid model to its line of S-Class luxury autos in June 2009, BusinessWeek reports, promising nearly 30 miles to the gallon and adding $14,000 to its $88,000 base sticker price. The model—which, unlike some other hybrids, can’t run exclusively on battery power—...